Roasted Garlic Sourdough Loaf

Ingredients

• 750 g water
• 250 g sourdough starter
• 800 g bread flour
• 200 g whole wheat or rye flour
• 20 g kosher salt
• 2 teaspoons dried herbs, such as herbes de Provence
• Finely grated zest of 1 lemon
• Rice flour, for proofing baskets
• 4 heads garlic, cloves separated and peeled
• 2 sprigs fresh rosemary
• 1 teaspoon chile flakes (optional, if you like a little heat)
• 1 1/2 cups olive oil, more if needed